I went to give blood on Friday night for the first time in about ten years. I was foolishly thinking I would be able to do the Park Run on Saturday morning. I was soon put straight by the nurse on that one. She said that whilst she couldn't stop me, I shouldn't be surprised if I collapsed if I tried it. So fair enough I thought I'll have a lie in then
Anyhow, due to my packed social calender over the weekend, and needing yesterday to recover from it I didn't actually get out for a run until tonight.
And...... I got a bit of a shock. I didn't keel over or anything but I REALLY struggled. I decided to only to do my short run (about 3.8k) it's a nice route and normally takes me 22 mins or so at an easy pace without breaking too much of a sweat, well ok that's a lie I'm normally very sweaty and bright red.
It took me over 25 mins tonight and I struggled through every step and had to stop a couple of times. It felt like I had my week 1 lungs back.
So I have learned another few lessons.
1) The old red stuff is quite important , it's what takes the oxygen to your muscles. Give an 1/8th of it away and you can expect your running performance to drop by about the same proportion at least until the missing red blood cells have been replaced, it takes 4 to 6 weeks apparently.
2) Being 4 minutes slower at running for a few weeks isn't important unless I have a world record to aim for, which to be honest I think I have left my athletics career a bit late for that.
3) Drinking lager not long after giving blood gets you drunk quicker than normal, not surprising really
So now I have a good excuse for being rubbish for the next couple of weeks. I was just wondering if anyone else has experienced this? It was warm tonight so it might have just been a bad run? I am going to give it another go tomorrow to see if was a fluke.
Anyhow happy runnings chaps and chapesses